As the name suggests, this is a multi-faceted festival. Celebrating digital innovation, the four-day event is crammed with geek cool: Serendipity Apps is an art show of iPhone and Android Apps; and budding electro noiseniks can build and perform their own instruments at the Dirty Electronics workshop. There are performances from sound artists such as Konono No 1 and high-profile speakers, as well as the launch of a global networking system.

Feather, by Kate McGwire, part of Concret and Glass show. Photograph: www.jpbland.co.uk

Unexpected art and music collaborations should inspire an air of anything-can-happen glee for artists and audiences alike, and happy accidents are just what the Concrete And Glass festival specialises in. This year, absurdist experimenters Volcano The Bear mix and match a Fischli and Weiss art film soundtrack using bizarre gadgets and DIY instruments; homemade arts and crafts get revisioned with Owl Project's wooden iPod, the mLog; David Shrigley curates a wayward night of music; and there's wayward art, too, including a kinetic music sculpture and feather installation by Kate MccGwire.

Cabinet War Rooms Bunker, part of Museums At Night. Photograph: Oli Scarff/Getty

Bringing the film Night At The Museum to life, this weekend of late openings offers a fresh perspective on our cultural spaces. Tate Modern's Turbine Hall stays open until midnight for No Soul For Sale, which unites the film, art and performance of 60 art collectives, with Sonic Youth's Thurston Moore among the collaborators. Surrey's Brooklands Museum hosts a sleepover for young motor racing enthusiasts, while the Cabinet War Rooms caters more for adults who want a taste of leading the country through the Blitz. Ghost hunters should head for Chatham's Historic Dockyard, which promises murderous hauntings until 3am.